Thursday
October 23, 2014

Homework Help: physics

Posted by sam on Tuesday, October 19, 2010 at 3:54am.

A ball is project from the building of height 250m, at angle 45degree below the horizontal with a speed of 25m/s.
i) how long does the ball remain in the air?
ii) find the magnitude and direction of the velocity of the ball just before it strikes the ground. (g=9.81m/s2)

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